Module 4: Interacting with Devices in an AWS IoT Greengrass
Group

This module shows you how AWS IoT devices can connect to and communicate with an AWS
IoT Greengrass core
device. AWS IoT devices that connect to an AWS IoT Greengrass core are part of an
AWS IoT Greengrass group and can participate
in the AWS IoT Greengrass programming paradigm. In this module, one Greengrass device
sends a Hello World message
to another device in the Greengrass group.